Ventilating apparatus



(No Model.) 2 Sheets-Sheet 1. W. LORD;

V VENTILATING APPARATUS.

( No Model.) 2 Sheets-Shed 2 W. LORD.

VENTILAIIN G APPARATUS. I Np. 295.499; V Patented Mar. 1.5 1884 1 I 1 Vflr- 5 H L=%F :::S::;.- 1

w P 3 A LA H e 3 YATES UNITED A'rnsrr Erica.

VE NTlLATlNG APPARATUS.

SPECIFICATION forming part of Letters Patent No. 295,499, dated Marchis, 1.884. Application filed July 16, 1883. No model.) Patented inEngland March 28, 1883, No. 1,567.

To aZZ whom it 71mg concern.-

Be it knownthat I, WILLIAM LORD, a subject of the Queen of GreatBritain, and residing at Middlesbrough, county of York, England, haveinvented certain improvements in appa ratus for preventing downdraft inchimneys and for ventilating railway-carriages and for otherventilatingpurposes, (for which I have obtained a patent in GreatBritain, No. 1,567, dated March 28, 1883,) of which the following is aspecification.

My said invention relates to apparatus to be applied to the upper partof chimneys, ventilating'shafts, or the like for the purpose ofpreventing downdraftand dispersing smoke and for effecting theventilation of rooms, railwaycarriages, and for other like purposes.

In carrying my invention into effect, I provide the upper part of thechimney or shaft with surrounding concentric bands or rings partlyoverlapping each other, so that there are spaces between the overlappingparts. The chimney-top or shaft-top andeach band or ring are furnishedwith a number of inclined blades, which blades are fixed to theexteriorsof the said top and bands or rings, and pass into the spacesbetween the overlapping parts. At the top or upper part may be fitted aplate, covering or partly covering the top and supported a shortdistance above or below the up permost band or ring or level therewith.

The apparatus constructed as described may be used as a chimney top orcowl or. as a ventilator; but when it is used for ventilatingrailway-carriagesor the like the top plate will be provided with acurtain,which depends telow the top of the uppermostband or ring, andthe part by which the apparatus is fixed to the railway-carriage will bepreferably made funnel-shaped in the interior at bottom, and be providedon its exterior with blade-springs, which,by their outward pressure whenthe apparatus is slipped intothe opening in the railway-carriage roof,will retain the apparatus in place. i Figures 1 and 2 of theaccompanying drawings respectively represent in elevation and verticalsection a chimney-top constructed according to my invention forpreventing downdrafts and dispersing smoke, and Figs. 3 and 4 arerespectively an elevation and vertical section of a modification of myinvention fitting it for use as a ventilator for railway-carriages orfor other like purposes.

Referring to Figs. 1 and 2, A is the body of the chimney-top,which, bypreference,I make of a tapering or conical form, as shown.

On the upper part of the body A are secured a number of inclined blades,B, to the upper ends of which is fixed concentrically to the body A aring, band, or cylinder, 0, partly overlapping the body A.; I

On the exterior surface of the cylinder 0 are fixed a number of inclinedblades, D, similar to those marked B, and to the upper ends of theseblades is fixed concentrically to the cylinder B, and partly overlappingthe same,another cylinder, E, which is also similarly provided on theexterior with inclined blades F, to the upper ends of which is attachedanother cylinder, G, forming the crown or terminal of the chimney-top.It will thus be seen that the chimney-top is of. gradually-increasingsize from the bottom to the top, and that a number of annular cencentricpassages, aa, are formed between the body A and the cylinder 0 andbetweenthe cylinders O and E and between the cylinders E and G, whichpassages are subdivided by the blades B, D,and F into a number ofsmaller passages or channels, aal. Theadvantage of this arrangementisthat avery powerful upward current of air in a direction inclined to theaxis of the chimney or shaft is produced, which, acting after the mannerof an ejector, creates an upward current in the shaft or chimney andeffects the withdrawal of any foul air or smoke that may be therein,while downdraft is prevented.

I make the blades B DFto break joint I The plates B, D, and F are, bypreference,

made with a projecting edge or lip or; are trough-shaped, as shown intransverse section on a larger scale in Fig. 2*, to facilitate theupward course of the current.

a The apparatus hereinbefore described may be used for ventilatingrailway carriages,

IOO

tilating purposes the arrangement illustrated the interior of thecarriage or chamber.

I 5 tion in the roof of a railway-earriage or other of-the carriage orapartment.

churches, ships" cabins, and other structures, buildings, or rooms byarranging a cover or plate over the top or crown to prevent the entranceof rain; but I prefer to employ for venby Figs. 3 and 4 of my drawings,in which the top cylinder, E, carries a top plate or dome, H, providedwith a depending rim or curtain, H to prevent the possibility of rainentering The lower portion, A of the apparatus is cylindrical on theexterior and provided with bladesprings a for the purpose of securingthe apparatus in the opening provided for its recepplace to which it isto be applied,while the interior is made funnelshaped or conical, asshown at a, to insure the increased facility for the escape of the foulair from the interior The ventilator may or may not be provided with avalve or valves, as shown in dotted lines at i,which can be turneddown,when required, I

by means of a handle, 2*. The other parts, which resemble those shown inFigs. 1 and 2, are marked with the same letters of reference, the upperring, G, and blades F being dispensed with.

I do not limit myself to the use of the number of rings or cylinders andseries of blades shown, as two or more may be used for the chimney-topand one or more for the ventilator, as found convenient.

I claim-- A ventilator or chimney-top consisting of inclined blades onthe outside, substantially as described.

WVILLIAM LORD. Vitnesses:

J. R. STUBBS,

ZVIz'ddlesbrough, Notary Public. Tr-ros. Hoon,

SoZicitor, lllz'ddlesbrough, England.

